[Solved] C reading input in while loop [closed]

Question

Well, this piece of code

int c; 
while ((c = getchar()) != EOF && c != '\n');

is used to clear the buffer, as mentioned in @napnac’s answer. It is mainly used instead of fflush (stdin);, which is UB. But note that this is successful only if the input buffer happens to contain data ending in a newline.

Otherwise, you can use fflush (stdin);, which is not recommended. You can also use the flushinp function provided by the curses library. It throws away any typeahead that has been typed by the user and has not yet been read by the program

Accepted Answer

Well, this piece of code

int c; 
while ((c = getchar()) != EOF && c != '\n');

is used to clear the buffer, as mentioned in @napnac’s answer. It is mainly used instead of fflush (stdin);, which is UB. But note that this is successful only if the input buffer happens to contain data ending in a newline.

Otherwise, you can use fflush (stdin);, which is not recommended. You can also use the flushinp function provided by the curses library. It throws away any typeahead that has been typed by the user and has not yet been read by the program